擅长:python、mysql、java
<p>我不确定梁是什么,但这是一个相当简单的问题。运行此程序(我认为类似于您的应用程序):</p>
<pre><code>groups = [['a',1,2,3],['b',4,5,6,7]]
results = []
for group in groups:
key = group[0]
for val in group[1:]:
results.append([key,val])
print(results)
</code></pre>
<p>结果是<code>[['a',1], ['a'.2], ['a',3], ['b',4], ['b',5], ['b',6], ['b',7]]</code></p>